bydzhokhartsarnaevandhis brother at the boston marathon were weapons of mass destruction that caused death. today the city and the nation also took an important step in the healing process. from the streets of boston, to the capitol in washington, people observed a moment of silence at 2:50 p.m. eastern, exactly one week after two bombs killed three and injured more than 180 others near the finish line of the boston marathon. [ bagpipes ] >> reporter: later, the fbi handed control of boylston street back to the city of boston. from his hospital bed, the 19- year-old suspect, dzhokhar tsarnaev, made his first appearance in front of a magistrate judge. tsarnaev is now charged with conspiring to use a weapon of mass destruction. in addition to the surveillance video the fbi shared with the public, a special agent testified the younger brother, dzhokhar, can be seen apparently slipping his knapsack onto the ground shortly before the explosion. but the white house announced tsarnaev won't be tried in a military tribunal as an enemy combatant. >> we will prosecute this suspect under u.s. law. u

, injuring almost 200 hers. they are still unarmed guardanddzhokhartsarnaevisnot able to speak because of a serious next wound but he is cooperating with investigators by either nodding or writing. the 19-year-old is claiming his older brother was the driving force behind last week's deadly bombings and that no international terrorist groups were behind the deadly plot. >> i said the two people committing these vicious attacks are either dead or arrested and i still believe that. >> reporter: now yesterday a judge was brought to his hospital bed to formally -- formerly charge the suspect. he has charged that could lead to the death penalty, and prosecutors can add to that long list of charges. shawn collier, the 26-year-old was shot during a violent standoff and vice-president joseph biden and his wife will be attending the funerals. >>> the department has increased patrols on downtown streets at transit centers, sporting events and other potential terrorist targets. as reported, there soon could be cameras on market street but one of the best tools are the eyes and ears of the public

guard. abc7 news reporter kira klapper is live in the courtroom.kira,dzhokhartsarnaevisnot yet able to communicate with detectives? >> that's right. they said he can't speak because he has severe throat injuries. authorities hope he will be able to talk. they have so many questions. they want to know if anyone else was involved in the alleged attack, zach har -- dzhokhar and his brother orchestrated. he was found in a boat hiding in this yard. a row bat whose brought in to remove the tarp out of fear he was wearing an explosive fight. but he was likely injured from the gunfight the night before when his brother died. this morning agents are anxiously wait to go question the man that sparked the nearly week long manhunt that ended in a spray of bullets. >> i think all the law enforcement professionals are hoping, for a host of reasons, that the suspect survives because we have a million questions. >>> a special federal interrogation team is on standby at the medical center where tsarnaev and many of his alleged victims are being treated. within the last hour we learned federal prosec

. >> as you mentioned, justice department officials toldcnndzhokhartsarnaevisfacing federal terrorism charges and state murder charges. preliminary hearing could happen in the next 30 days. a lot hinges on when the suspect is well enough to speak. investigators are eager for him to talk so they can find out who planned the attack. tsarnaev will likely be appointed a federal public defender. for now, the justice department is invoking something known as a public safety exception. this rule is used to question terrorism suspects without reading them miranda rights. the rule was created to question terrorists about other potential threats. senator carl leven says so far there's no connection between the suspect and terrorist groups. leven said to hold him under these circumstances would be contrary to our laws and jeopardize our effort to prosecute him. during interviews before suspects are read their rights is often not admissible during the trial. the issue on miranda rights is further complicated because the u.s. is a u.s. citizen. many of the rules cannot be used on americans. live

virning suspect will be answering questions. zoz has a neck wound--dzhokhartsarnaevhasa neck round that's keying him from speaking. we're hearing he's answering questions while writing, still under heavy guard at the hospital. no official charges have been filed yet but that will change today or the coming days. boston police believe both brothers had plans to kill others. >> both suspects were armed with guns at the scene of the shooting. >> there's also a question this morning on how the suspect should be questioned in the first place. some lawmakers say he should be contracted an em -- considered enemy combatant. >> the decision not to read miranda rights was made by the federal officials. this is a unique clause at the federal level that we've not experienced here. >> the mother of both suspects tells the "associated press" that the fbi spoke to her sons after the bomb exploded an continues to claim that the fbi monitored him back in 2011 during an interview. a moment of silence begins at 11:50 hour time. back to you. >> thank you. >>> students at the university of massachusett

. the fbisaysdzhokhartsarnaevhasbeen having difficulty speaking because of a neck wound. the fbi says the 19-year-old is now claiming his older brother was the driving force behind this and did it because of islam and no international terrorist groups were involved. >>> we're hearing from more victims of the bombing. a 32-year-old woman lost her foot and part of her lower leg in the explosion and is stick struggling to come to -- struggling -- still struggling to come to terms with what happened. >> despite her loss, she says she's determined to dance again. she's a ballroom instructor. coming up at 7:30, we'll very continuing coverage. >>> an east bay lawyer accused of delivering a hit list for her client is facing a disbarment hearing later today. the chauncey bailey reports attorney lorna brown is accused of smugging the hit list -- smuggling the hit list from her client out of jail. the list contained those expected to testify against yusef bey. >>> later today, the contra costa board of supervisors will consider closing two more five stations. the budget -- fire stations. there's